<html xmlns:th="http://www.thymeleaf.org">
<body>
<div th:fragment="nav">
  <nav class="navbar navbar-inverse navbar-fixed-top" style="margin: 0; border: 0">
    <div class="container">
      <div class="navbar-header">
        <button type="button" class="navbar-toggle collapsed" data-toggle="collapse"
                data-target="#navbar" aria-expanded="false" aria-controls="navbar">
          <span class="sr-only">Toggle navigation</span>
          <span class="icon-bar"></span>
          <span class="icon-bar"></span>
          <span class="icon-bar"></span>
        </button>
      </div>
      <div id="navbar" class="navbar-collapse collapse">
        <ul class="nav navbar-nav">
          <li>
            <a href="/">首页</a>
          </li>
          <li>
            <a href="http://www.jianshu.com/u/7b7ec6f2db21" target="_blank">作者</a>
          </li>
          <li>
            <a href="http://spring4all.com" target="_blank">Spring4All社区</a>
          </li>
        </ul>
        <div class="navbar-form navbar-right">
          <a class="btn btn-danger" th:href="@{/user}" th:if="${#httpServletRequest.remoteUser}">个人中心</a>
          <a class="btn btn-success" th:href="@{/login}"
             th:unless="${#httpServletRequest.remoteUser}">登录</a>
        </div>
      </div>
    </div>
  </nav>
</div>
</body>
</html>